Envelope for photographic light-sensitive material



July 6 1926. 1,591,486

E. P. FLYNN ENVELOPE FOR PHOTOGRAPHIG LIGHT SENSITIVE MATERIAL Filed April 5. '1924.

INVENTOR,

zwarMz -R B Y ATTORNEYZS Patented July 6, 1926.

nnwann r. FLYNN, or nocnnsrnn; new YORK. Assrenon TonAs'rrrAu KODAK cot-i PANY, or noonnsrnn, NEW YORK, A conronar'ioir or nnwvonir;

ENVELOPE non PHOTOGRAPHIC nien'r-snnsrrrvn'iun rnninn Application filed April 3, 1924.

lliy invention relates to an improved form of envelope designed particularly for use with photographic li ht sensitive material such as is commonly known as printing paper. One object is to provide an en: velope from which the sensitized material can be easily removed in a dark room with out danger of bending or abrading the paper; another object is to provide an envelope which is suitable for repacking unused sheets of paper; another object is to provide a handle extending beyond the liinits ot'the envelope to facilitate handling the sensitized products without bending or abrading; and other objects will. appear from the following specification, the novel features-being pointed out in the claim, at the end thereoih The usual package of ligl'rt sensitive printing paper onsists oi? a number of sheets of the sensitive paper wrapped in black paper or placed in an inner envelope, and thisis inturn placed in the covering or outer envelope. The inner package must be made light tight, and is preferably arranged so that the original package may be used as a container for the light sensitive materials ai'ter some of the sheetshave been removed for use.

As is well known, paper or other supports covered with a photographic light sensitive emulsion are susceptible to abrasion or triction markings. Some paper surfaces are more susceptible than others, the glossy or enameled surf-a es generally being most difficult to keep tree from these objectional markings. Eluch marks, which develop up in irregular dark lines may be caused in a variety of ways, among which are direct pressure, such may be caused by pulling out the paper while holding it through the walls of an envelope; and sharp bending, such as may be caused by pressing the edges oi an. envelope together in an attempt to open the end of a package widely to permit the inner package to be removed. Binding is also apt to crack some of the more brittle emulsions such. as are used on certain types oi printing papers. It is desirable to elinn inate the sources oi trouble as tar as possible, and this invention relates to a means for overcoming such diiiiculties as may result from opening the original package, and such subsequent insertions and removals from the envelope as may occur.

Serial No. 704,043.

Ordinarily the inner wrapping -or envelope. for the sensitized paper fits closely into. the outer envelope, and it, the latter envelope be grasped by one hand while endeavoring to withdraw the inner. package with the otherv hand the paper can be and.

frequently is. bent and considerable. pressure may be applied through the walls of the package.

It is therefore desirable to provide a package which can be loaded and unloaded with sensitized material with a minimum amount of friction, and have provioed an envelope to be hereinafter fully described, in whichv a handle is provided beyond the walls of the outer envelope for holding the envelope without applying any pressure to the contents thereoi while the inner package may be. moved relativeto the envelope. I have provided the handle directly opposite the open end of the envelope in a position in which it can be used. to hold the outer. envelope against the force being applied'to the inner package in removing it from. the envelope. This handle can also be used to hold the envelbpe while the inner package is being inserted into the envelope. Being located onv the lineofiorce used in. either loading or unloading, friction is red ucedto aminiinum and the entire. packagecan be handledwithoutdanger. ofab 'asion. I

Coming now to the drawings where like reference characters denote like parts throughout,

Fig. 1 is a perspective view of an envelope constructed in accordance with and illustrating one embodiment 01" my invention;

Fig. 2 is a plan View of a blank for mak ing another embodiment of my invention;

Fig. 3 is a plan view of the envelope made from the blank shown in Fig, 2; and

Fig. 4; is an enlarged section on line 4*4: of Fig. 1. i

in Fig. 1 the envelope E is formed of a sheet of paper 1, having the sides 2 oi the sheet folded at 3 and joined at 4:. A flap 5 is provided at one end through which the inner package P may be inserted or removed. This package maybe an envelope or a sheet of wrapping paper enclosing the sensitized paper sheets S. At the opposite end from flap 5 there is a second flap 6 preferably i'astened against the sides 2 by pasting.

For holding the outer envelope E for the removal or insertion of the inner package P I provide a handle which may be in the form of a flap 10 as shown in Fig. 1 having sides 11 which may extend from a fold 12. One portion 13 of each side is pasted against the central portion of the end 14 of envelope E and another portion 15 of each side is pasted against the opposite portion of the fiap to form a handle H of a double thickness of material, The location of the handle H is important, being positioned upon the line of force applied to package P when it is being inserted into or removed from envelope E. By holding the handle H the edge 20 of the inner package P can be grasped and a straight pull will withdraw the inner package without any tendency for this package to bind at the edges or to be otherwise frictionally retained in envelope E. The tab or handle H can be readily found in a dark room, where such a package is always handled, and being made of fienible material may be folded against the envelope E for shipping.

In Figs. 2 and 3 I have shown another embodiment of my invention -wherein a sheet is cut with a flap 51 at one end and a second [lap 52 at the other end. Flap consists of three parts, 53, 54-, and 55, the first and' last being identical in size and shape. Flap 54-, however, extends beyond the other flaps, and may broaden out into an end 56. Binding the blank shown in Fig. 2 along the dashed lines I) and suitably fastening the edges 57, together as well as flaps :33, 54 and produces the envelope 6 shown in Fig.

As end 56 is fastened over the edges 58 of flaps 53 and it forms an additional retaining means for these flaps, and being pasted upon itself at 59 and the envelope 6 at 60, it forms an integral handle it of a double thickness of material,

As in the first embodiment of my invention the handle h is positioned in the centerof the end 61 of the envelope directly opposite the l'lap 51 past which the inner package P is inserted or removed.

In both embodiments of my invention the outer envelope can be, and generally is used for packing the sensitized sheets of paper which may not be used when the package is open.

Having thus described my invention,

what I claim as new and desire to secure by a Letters Patent is:

In an envelope having an open end and adapted to contain an inner package of photographically light sensitive material capable of being marred by pressure, a flap for closing the open end, said flap being adapted to be opened for the insertion or removal of the inner package by a force applied transverse to the flap and to the open end of the envelope, a closed end at the end ot the envelope opposite the open end provided with a flap extending beyond the walls oi the envelope 'lorming a handle for holding the envelope without squeezing the inner package through the walls of the en velope as the inner package is being moved through the open end, the flap being positioned 'on the envelope on a line coincident with the line of force applied to insert or remove the inner package from the envelope, whereby the sensitized material may be moved relative to the envelope with a minimum of friction.

Signed at Rochester, New York this 27th day of March 1924.

EDlVARD P. FLYNN. 

